/Engine/Source/Runtime/StaticMeshDescription/Public/StaticMeshOperations.h
static void BuildWeldedVertexIDRemap ( const [FMeshDescription](API\Runtime\MeshDescription\FMeshDescription) & MeshDescription, const float WeldingThreshold, [TMap](API\Runtime\Core\Containers\TMap)< [FVertexID](API\Runtime\MeshDescription\FVertexID), [FVertexID](API\Runtime\MeshDescription\FVertexID) > & OutVertexIDRemap )